Sand-trap for pumps.



R. GONRADER.

SAND TRAP POR PUMPS.

APPLIOATION FILED 1211.25, 1907. nmnzwnn JUNE '1. 1910.

Pzmnted Jan. 10, 1 911.

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RUDOLPH CONRADER, F ERIE, PENNSYLYANI SAND- TRAP FOR PUMPS.

Specification of Letters Patent.

Patented Jan. 10, 19,11.

Application led April 25, 1907, Serial No. 370,185. `Renewed June 7, 1910. Serial No. 565,627.

l To all whom it may concern:

Be it known that I, RUDOLPH CONRADER, a citizen of the United States, residing at Erie, in the county of Erie and Statel of Pennsylvania, have invented new and useful Improvements in Sand-Traps for Pumps, of which the following is a speciiication.

This invention relates to sand traps for pumps and consists in certain im rovements in the construction thereof as wil be hereinafter fully described and pointed out in the claims.

The object of the invention is to provide means for preventing the accumulation of,

My invention is designed not onl to prel vent the settling of this sand on t e plun-v ger, but to a large extent to separate out and catch the sand as it is pumped.

The invention is illustrated in the accompanying drawings as follows:

Figure 1 is a central -section through a pumping mechanism, the parts bein those at the top of the well. Fig. 2,.a simi ar section through an intermediate portion of the pumping mechanism, the parts being slightly above the working barrel. Fi 3 is a similar section of the parts at the gottom of the pump.

It will be understood that in ordinary practice the parts willbe very much longer -relatively to the diameter of the pump than as shown in the drawings.

1 marks the strainer, arranged below the working barrel; 2 an auxiliary valve secured' tty .the working barrel; 3 thestanding valve arranged a/boveuthe' auxiliary valve; 4 an extnslon to the working barrel; 5 the workingbarrel; 6 the tubing; 7 the casing; 8 the casing'head; 9 the cap 'for the casing head; 10 the collar bg which the tubing is su ported; 11 the ting at the top o he tu ing vcontaining the gland 12 and discharge connection 13.

The plunger 14 has an extension 15. A pin 16 1s secured to the standing valve and extends into the extension 15, its purpose being to withdraw the standingy valve with the plunger. The plunger has the passage 17 through it and the liquid pumped is carried through this passage. A crownlS is secured to the upper end of the plunger and the valve 19 is arranged in this crown. A fitting 20 extends upwardly from vthis crown and a ipe 21 is screwed into this fitting. A cup s aped sand trap 22 is formed on the upper end of the fitting 20 and is preferably approximately the size of the working barrel, with its upper end o en so ythat any sand settling from the liqui immediately above 1t 1s caught in the cup 22. The pipe 2 1 Vis Screwed into a fitting 23. This fitting is internally screw threaded at the bottom for connection with the pipe 21 and has an exterior and interior screw thread at the top. It is also provided with a passage 24 through which the liquid passes.

The pi e 25 is screwed into'the vinterior thread o the fitting 23 and extends upwardly therefrom. It has the cap26 and lateral opening 27 near its top. The larger pipe 28 1s screwed into the exterior'thread of the fitting 23 and extends above the cap 26 and is secured to a fitting 29. The fitting ting. It 'is closed at the top by the cap 31 4 and has the lateral opening 32 immediately beneath the cap. A ,pipe 33, larger than the pipe 30is screwed onto the exterior thread of the fitting 29 and extends upwardly 'above thai cap 31. -A fitting 34 is -screwed into the upper end of the pipe 33. The top of this iittlng is externally and internally threaded and the sucker rod connection 35 is screwed into .the interior thread. This connection has an opening through it forming as assa e for the liquid passing'from the trap. rme by the pipes 33 and 30 and has lateral openings 36 which open into a trapvl 37. i The .trap 37 is cup shaped, open at the upper end and is preferably as largc as can lbe usedin the tubing. The lateral openings .36 are preferably near the bottom of the Y thread 38 by means of the ordinary sucker trap 37 andthe upper end of the connection 35 is closed and -is provided with the screw rod 39. The ordinary polished rod 40 is secured to the sucker'rod and extends through the gland 12.

In operatign the liquid is carried through the hollow' plunger through the pipe 21 through the lower trap formed by the pipes 25 and 2S and through the second trap formed by the pipes and33 and then into the upper trap 37. This is discharged into .the lower part of the trap 37 and moves upwardly and out of the trap as the liquid 1s forced upwardly.l In a former application, Serial No. 346,430, Dee. 5, 1906, I have shown the general arrangement of the parts herein shown. In that construction, however, openings corresponding to the opening 36 vare above the trap 37 The result 1s that the sand which settles from a 'column of liquidwill in timeiill the sand trap and but I f little ofthe sandQso settling will pass into the lower traps, thus the capacity of the devicevis limited. In the present construction the liquid passing from the openings 36 is deflected by the bowl of the trap 37 so-that all the liquid is moving -in an upward direction as it leaves the bowl so that the sand `the working barrel. With the present construction more orless sand is caught by the trap during the pumping action, the lateral arrangement ofthe openings 27 and 32 particularly facilitating this. When, however,

of liquid .above the'trap, the sand settling fromthis liquid is nearly all caught in the trap 37. From it the sand settles and passes through the openings 36 down to the lower trapxs and vif suiicient to lill the trap formed wit the pipe 33 itvwill pass through the openings 32into the lower trap. -In this' 'way the capacity may be very much increased. In practice, the greater amount of suchl particles as will be caught by traps similar in construction to theinclosed -trap comprising the ipesf28 land 33,V will be de'- osited in the Ower trap... On the othen and, the sand settling from thel column at the completion of thepumping'willbe de- 'posited principally in the-upper trap.4 The .v i. q

lng vi ing the pipe 21 w is pumped off, leaving the column4 diameter ofthe cup 37 being as nearly as practicable the size of thc tubing, .it is possible or very little sand to get by it S0 that the liquid below this cup and which operates onthe plunger is very clear.' The auxiliary cup 22 catches practically all of this as it settles so that the chances of sand getting in contact with the cups of the plunger is very slight.

It will be noted that the tubing has a larger interior diameter than the working barrel. This is desirable in order to permit the removal of the pump plunger. This is also desirable in the present construction, in that it permits a larger sand trap and consequently one better protecting the Worksurfaces of the plump barrel. By proich extends up out of the working barrel, it is possible to make the inclosed traps as well as the open traps larger.

What I claim as new is:

1. In a sand trap for pumps the combination with the pump plunger; of a sand trap arranged above the plunger having an open upper end and having a connection with the plunger through which the pumped fluid discharges into the trap.

2. In a sand trap for pumps the combination with the plunger and sucker rod; of a sand trap arranged above the plunger having an open upper end; and a connection between the sucker rod and plunger through which the pumped luid passes andy from which fluid is discharged into the trap.

3. In a sand trap for pumps the combination with the ump plunger, working barrel and tubing oi) a sand trap arranged above the plunger having an open up er end and having a connection with the p unger from which the pumped fluid discharges into the trap, said trap being of a diameter approximating the interior diameter of the tubing.

4. In a sand trap for pumps the combination with the plunger and working barrel, tubing and sucker rod o f a sand trapar-l ranged above the plunger having an open upper end and being of a diameter ap roxi'T mating the interior diameter of the tu ing; and a connection between the sucker rod and plunger through which the 4pum ed Huid passes and 'from which the fini is discharged into the trap.

5. In a sand trap for pumps the combination with a hollow plunger of a sand trap Aarrangedabove the plun' er having anopen upper end; aconnection etweensaidl lunger and said open trap arranged to disc arge 1nto said open trap and comprisin an inclosed trap through. which thel liqui passes.

6. In a sand trap -for pumps the combination with a hollow plunger of a sand trap arranged above the plun er having an open` upper end; a connection etween said lunger and said open trap arranged to disc arge 4in the outer pipe, being of such relative size as to leave a space between the walls thereof and having a closed top with lateral open ings near the top.

8. In a sand trapfor pumps the combination with the pump plunger of a sand trap arranged above the pliinger having an open upper end and having a connection with the plungerfrom which the pumped fluid di-s.

charges into the trap; and an auxiliary trap arranged immediately above the l plunger and having its upper end open.

9. In a sand trap for pumps the combination with a hollow plunger; a sand trap arranged above the plunger having an open upper end; a connection between the plun- .ger andthe sand trap arranged to discharge into said sand trap; an inclosed-sand'trap having its discharge in a confined passage of less diameter than the body of the trap between the plunger and the open sand trap; and an auxihary open trap having its upper end open arranged between the inclosed trap and the plunger.

10. In a sand trap for pumps the combination of the combined crown and fitting; an open trap formed of parts 18, 20 and 22 respectively; the pipe 21 extending upwardly from said crown; the inclosed trap formed with the pipes 25 and 28; a second inclosed trap formed of the pipes 30 and 33 above the same; a trap 37 open at the top and connected with the inclosed trap; and a connection between'the inclosed trap and the trap 37 arranged to dischargeinto the trap 37. v-

11. In a sand trap for pumps the combination with the open trap bowl and a connection 35 extending upwardly from the bot-` tom of the same and having a passage with lateral openings36 leading into the bowl 37. 12. In a sand trap for pumps the combination with a fitting having an external and internal thread; a sand trap bowl 37 arranged on the exterior thread; the fitting 35 screwed into the interior thread having a passage with lateral openings leading into the7 owl 37 and having a sucker rod connectron 38 at the top thereof.`

I3. I`asand trap for pumps, the combination ofa'pump plunger, of a sand f trap arranged above the plunger, having a connection with the plunger through which the pumped Huid discharges into the trap and a sucker rod connection above the sand tra p,

connected with the sand trap below the top edge of the sand trap, formii'ig a continuous opening into the said .trap along the top edge.

14. In a sand trap for pumps, the combi nation of a pump plunger, a working barrel, a tubing above the barrel of a greater 'interior diameter than the interior diameter of the barrel, and a sand trap arranged above the barrel, having an open vupper end and having a connection with the plunger from which the pumped fluid discharges into the trap, said trap being of a diameter approximating Ythe interior diameter of the tubing.

15; In a sand trap for pumps, the combination of a pump plunger', a working bar-I rel, a sand trap arranged above the plunger having an open upper end, the connection between said plunger, and said open trap being arranged to discharge into said open trap and comprising an inclosed trap through which the liquid passes, said iuclosed trap being of less diameter than the diameter of the topA of 'the open trap and having its discharge in a confined passage of less diameter than the body of the trap.

16. In a sand trap for pumps, the combination of a working barrel, a pump plunger arranged in the working barrel, a pipe 2l connected with the plunger through whichv the pumped liquid passes, said pipe extending above the 'working barrel, a sand trap comprising an inclosed trap connected with the pipe 21 and an open top trap having its discharge in a confined passage of less diameter than .the body of the trap connected with the inclosed trap, the connection between the inclosed trap and the open trap, being arranged to discharge into the open trap. v

17. In a sand trap for pumps, the combination of a working barrel, a tubing in continuation of the working barrel `but of greater interior diameter than the working barrel, a plunger in the working barrel, a pipe 21.eXtending upwardly from the plunger above the working barrel and an open top trap connected with the pipe 21 and approximating the diameter of the tubing. l

18. In a sand trap for pumps. the combination of a. working barrel, a. tubing in continuation of the working barrel, but of greater .interior diameter than the working barrel, a plunger in the working barrel, a pipe 2,1 extending upwardly from the plungerv above the working barrel, and anlnclosed sand trapfha-ving' its discharge in a confined passage of less diameter than the body ofthe trap arranged above the working barrel and connected'with pipe 21, an open top trapconnected with the inclosed ltrap and approximating the diameter of the l19.1111 a sand trap for pumps, the combintion 0f e `Working barrel; a tubing iii continuation of thebarrel, a plunger in the Working barrel; an open top trap above the plunger; a connection between the plunger and the trap independent of the tubing and forming the passage for the pumped fluid,` Said connection discharging into the trap tneari its bottom; and an elongated receptacle below and connected with the sand tra of less diameter than the trap, and into w ich material can settle from the trap.

`In testimony whereof I have hereunto set 15 my hand in the kpresence of two subscribing wltnesses.

RUDOLPH CONRADER.

Witnesses:

C. D. HIGBY, BEssIE F. PARKER. 

